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26 Section 3 VSC Controller Operation TP-6843 1/13
3.3 Controller Power
The VSC controller is powered by the generator set
engine starting battery and the built-in battery charger.
Note: To disconnect controller power, disconnect the
AC power to the generator set starting battery.
If controller power is disconnected and reconnected,
you will be prompted to set the time, date, and
exerciser. The first setting will flash. Press the Up and
Down arrow buttons to change the setting. Press
Select to save the setting and move on to the next.
Repeat until all settings are saved and the controller
returns to the main menu. See Section 3.5 for more
detailed instructions to change settings on the VSC.
See Section 3.6 for more detailed instructions to set
the exerciser or change the exercise settings.
3.4 Battery Charging
The controller includes a built-in battery charger to
maintain the engine starting battery. The VSC
controller monitors the battery voltage and provides a
constant 13.8 ±2% VDC voltage and maximum
2.5 amps to charge the battery.
The installer must connect 120 VAC/60Hz power on a
breaker-protected circuit for the built-in battery
charger.
3.5 Changing Settings
Some settings can be changed from the controller
keypad. The controller settings and generator set
output are factory-set and should not require field
adjustment under normal circumstances. Check and
adjust the settings and/or output when:
• The controller has been replaced.
• The voltage requires adjustment for a particular
application.
• Troubleshooting generator set problems.
Have controller setup and adjustment performed only
by an authorized Kohler distributor/dealer or
authorized representative.
The following procedure explains how to change
settings. See Figure 3-7 for an example using the
Date and Time settings.
Note: Use caution when navigating the controller
menus. In some menus, pressing the Select
button can enable editing of the controller
settings. Changing the settings to incorrect
values can adversely affect generator set
operation or render the unit inoperable.
3.5.1 Procedure to Change Settings
1. Press the Select button to enter the main menu.
2. Press the down arrow button until the desired
menu is displayed.
3. Press the Select button to enter the genset
system displays. See Figure 3-10.
4. Press the down arrow button to step through the
generator set system settings.
5. To change any of the genset system settings,
press the Select button. The selected setting
flashes.
6. Press the up or down arrow buttons to increase
or decrease the setting.
7. When the desired setting is shown, press Select.
The value stops flashing. If there are additional
adjustable settings on the screen, the next setting
flashes. For example, in the date menu, the day,
month, and year can be adjusted. The settings
are saved on completion of step 7.
8. Repeat steps 6 and 7 for each setting on the
screen.
9. Press the down arrow to step to the next screen.
10. To exit, press the down arrow button until Return
is displayed. Press the Select button to exit the
menu.
11. Press the AUTO or OFF button to exit the main
menu.
Note: If no buttons are pushed, the controller
exits the menus and returns to the
generator set status display after
5 minutes.